Are tropical estuaries environmental sinks or sources?

2005 ◽  
pp. 273-294
Author(s):  
Egbert K. Duursma
Keyword(s):  
Tropical Estuaries

scholarly journals Importance of estuary morphology for ecological connectivity with their adjacent coast: A case study in Brazilian tropical estuaries

2021 ◽  
Vol 251 ◽  
pp. 107184
Author(s):  
Latifa Pelage ◽  
Júlio Guazzelli Gonzalez ◽  
François Le Loc'h ◽  
Valdimere Ferreira ◽  
Jean-Marie Munaron ◽  
...  
Keyword(s):  
Tropical Estuaries ◽  
Ecological Connectivity ◽  
Estuary Morphology

Short-term water quality variability in two tropical estuaries, central Sumatra

Estuaries ◽  
2003 ◽  
Vol 26 (1) ◽  
pp. 156-165 ◽  
Author(s):  
P. G. Sanderson ◽  
D. M. Taylor
Keyword(s):  
Water Quality ◽  
Short Term ◽  
Tropical Estuaries ◽  
Central Sumatra

Diversity and distribution of assemblages of estuarine decapod larvae (Crustacea: Decapoda: Anomura, Brachyura) in tropical southeastern Brazil

Zootaxa ◽  
2011 ◽  
Vol 2758 (1) ◽  
pp. 26 ◽  
Author(s):  
R. A. MAGRIS ◽  
L. F. LOUREIRO FERNANDES
Keyword(s):  
Spatial Heterogeneity ◽  
Relative Abundance ◽  
Southeastern Brazil ◽  
Spatial Gradient ◽  
Estuarine System ◽  
Ecological Stability ◽  
Tropical Estuaries ◽  
Key Factor ◽  
Decapod Larvae

Decapod larvae assemblages were studied in the tropical estuaries off southeastern Brazil (Piraquê-açú and Piraquê-mirim rivers estuaries). A total of 32 taxa of decapod larvae were recorded. Brachyuran larvae dominated in Piraquê-açú estuary, with 62% of the relative abundance, and 49% in Piraquê-mirim estuary. Mean larvae concentrations ranged from 17.2 m -3 at Piraquê-mirim (August 2003) to 221.1 m -3 at Piraquê-açú (April 2003). The assemblage of larvae in both estuaries was diverse, especially at Piraquê-mirim, which showed higher ecological stability. The high spatial heterogeneity of the Piraquê-açú and Piraquê-mirim estuarine system resulted in the division of the assemblage into two well-defined groups (truly estuarine and euryhaline). Salinity spatial gradient was a key factor in the structure and distribution of larvae.

Seasonal and spatial shifts in copepod diets within tropical estuaries measured by fatty acid profiles

2016 ◽  
Vol 69 ◽  
pp. 284-294 ◽  
Author(s):  
Gustavo Correia de Moura ◽  
José Etham de Lucena Barbosa ◽  
Joana Patrício ◽  
Janiele França Nery ◽  
Ana Marta Mendes Gonçalves
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Profiles ◽  
Tropical Estuaries

Integrated assessment of metal contamination in sediments from two tropical estuaries

2014 ◽  
Vol 106 ◽  
pp. 195-203 ◽  
Author(s):  
Marcos Krull ◽  
Denis M.S. Abessa ◽  
Vanessa Hatje ◽  
Francisco Barros
Keyword(s):  
Integrated Assessment ◽  
Metal Contamination ◽  
Tropical Estuaries

Functional diversity of zooplankton communities in two tropical estuaries (NE Brazil) with different degrees of human-induced disturbance

2017 ◽  
Vol 129 ◽  
pp. 46-56 ◽  
Author(s):  
Helena Veríssimo ◽  
Joana Patrício ◽  
Érica Gonçalves ◽  
Gustavo C. Moura ◽  
José Etham L. Barbosa ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Tropical Estuaries ◽  
Zooplankton Communities

scholarly journals A natural experiment reveals the impact of hydroelectric dams on the estuaries of tropical rivers

2019 ◽  
Vol 5 (3) ◽  
pp. eaau9875 ◽  
Author(s):  
E. Ezcurra ◽  
E. Barrios ◽  
P. Ezcurra ◽  
A. Ezcurra ◽  
S. Vanderplank ◽  
...  
Keyword(s):  
Pacific Coast ◽  
Economic Consequences ◽  
Coastal Sediments ◽  
Coastal Protection ◽  
Hydroelectric Dams ◽  
Sediment Trapping ◽  
Tropical Estuaries ◽  
The Stability ◽  
The Cost ◽  
The Impact

We tested how sediment trapping by hydroelectric dams affects tropical estuaries by comparing two dammed and two undammed rivers on Mexico’s Pacific coast. We found that dams demonstrably affected the stability and productivity of the estuaries. The two rivers dammed for hydroelectricity had a rapid coastal recession (between 7.9 and 21.5 ha year−1) in what should otherwise be an accretional coastline. The economic consequences of this dam-induced coastal erosion include loss of habitat for fisheries, loss of coastal protection, release of carbon sequestered in coastal sediments, loss of biodiversity, and the decline of estuarine livelihoods. We estimate that the cost of the environmental damages a dam can cause in the lower part of basin almost doubles the purported benefits of emission reductions from hydroelectric generation.

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